| Last Name Sort ascending | First Name | Year | City | Section/Speaker Type |
|---|---|---|---|---|
| Carson | J.R. | 1924 | Toronto | Engineering |
| Carrus | S. | 1932 | Zurich | Analysis |
| Carrus | S. | 1932 | Zurich | Pedagogy |
| Carothers | S.D. | 1924 | Toronto | Engineering |
| Carlsson | G. | 1986 | Berkeley | Topology |
| Carlson | Jon F. | 1990 | Kyoto | Algebra |
| Carleson | L. | 1962 | Stockholm | Analysis |
| Carleson | L. | 1966 | Moskva | Plenary |
| Carleson | Lennart | 1990 | Kyoto | Ordinary Differential Equations & Dynamical Systems |
| Carleman | Torsten | 1932 | Zurich | Plenary |
| Cardaliaguet | Pierre | 2022 | Virtual | Partial Differential Equations, Probability |
| Carathéodry | C. | 1932 | Zurich | Plenary |
| Caraiani | Ana | 2022 | Virtual | Number Theory, Algebraic and Complex Geometry |
| Caprace | Pierre-Emmanuel | 2022 | Virtual | Algebra |
| Cappell | S. E. | 1978 | Helsinki | Topology |
| Caporaso | Lucia | 2018 | Rio de Janeiro | Algebraic and Complex Geometry |
| Capelli | A. | 1904 | Heidelberg | Analysis |
| Capelli | A. | 1904 | Heidelberg | Arithmetic and Algebra |
| Capelli | A. | 1908 | Rome | Arithmetic, Algebra, Analysis |
| Capelli | Alfredo | 1900 | Paris | History and Math Education |
| Cantor | M. | 1904 | Heidelberg | History of Mathematics |
| Cantor | Moritz | 1900 | Paris | Plenary |
| Cantelli | F. P. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Cantat | Serge | 2018 | Rio de Janeiro | Algebraic and Complex Geometry, Dynamical Systems and Ordinary Differential Equations |
| Cannon | J. W. | 1978 | Helsinki | Topology |